Energy
Define energy
Energy is the ability to do work.
What force is being applied when you type on a computer
what is a push
How does an object in motion get in motion
What is an object in motion has to touch it to put it in motion
Define energy transfer. Use the definition that would apply when you turn on a light bulb.
An energy transfer is the movement of energy from one place to another place.
Define collision
A collision happens when one object comes into contact with another object.
As Felix rides his bicycle down the hill, is (a) kinetic energy changing to potential energy, (b) electrical energy changing to kinetic energy, (c) potential energy changing to kinetic energy, or (d) kinetic energy changing to electrical energy?
(c) potential energy is changing to kinetic energy
What are the 2 forms of force
what is a push and a pull
Define motion
Motion is a change in an object's position.
Define energy transfer. Use the definition that would apply when electrical energy changes to into light energy.
Energy transfer is the change in energy from one form to another form.
In a collision between a moving van and a parked car
(a) what happens to the van before the collision and
(b) what happens to the car before the collision?
The van has kinetic energy and is moving toward the car. The car has potential energy because it has stopped.
Define potential energy.
Potential energy is stored energy.
What is the force applied when you open the door
what is a pull
How does the weight of an object affect the object's kinetic energy?
Heavier objects have more kinetic energy.
The electricity goes out of the wall socket into the lamp. Describe the energy transfer that has just happened.
The electrical energy moves from the socket to the lamp and transform into light and heat.
In a collision between a moving van and a parked car, what happens during the collision?
The car receives kinetic energy from the van. This is an energy transfer.
Define kinetic energy.
Kinetic energy is the energy that an object has due to its motion.
(soft, medium, hard)
What is had force
What needs to happen for motion to occur?
The applied force needs to be greater than the forces of gravity and friction.
A drone is flying. Explain two of the three different energy transfers that happen. (think about all the energy that is transferred when a drone is flying)
(1) electrical energy from the drone battery moves to the drone motor.
(2) electrical energy changes into kinetic energy as the drone flies
(3) electrical energy changes into sound energy
In a collision between a moving van and a parked car, what happens after the collision?
The motion of the van slows down then stops. The energy transfer of kinetic energy makes the stopped car move a short distance.
Complete this quote from Albert Einstein
"Energy cannot be created or _________ . It can only be ________ from one form to another."
Energy cannot be created or destroyed. It can only be changed from one form to another.
Give an example of force in our everyday life?
example- when we pull a toothbrush to our face to brush our teeth.
Define speed.
Speed is the measurement of how fast an object's position changed in a given amount of time.
During a collision name the forms of energy transfer
kinetic energy
heat energy
In a collision between a van and a stopped car, how do you know there is an energy transfer?
You know there is an energy transfer because the motion of both vehicles changes. The van in motion slows down and the parked car starts to move.